The strategist of Kyosho Academy and arch-nemesis of Koumei. She is paraplegic, having lost her feet years ago while Teni went on a killing rampage, and uses a wheelchair for mobility. She also has a dragon tattoo on her right hand (in the anime, they glow whenever she uses her chi or senses a strong opponent). Teni looked up to Shibai and called her "Maria-sama (Lady Maria)", treating her as a divine higher power. Shibai is secretly running Kyosho and is also Sousou's lover. She is secretly manipulating Sousou towards an ill-defined goal, and shows no signs of sympathy towards her loyal fighters. For example, she did not show any remorse towards Teni after she was horribly injured by Ryomou during their battle. She was almost killed by Sousou during one of his dragon stages but was saved just in time by Kyocho.

It is later revealed by Kentei in volume 17 of the manga that Shibai's real name is Shikyo Gifu (魏諷 子京 Gifū Shikyō?), the Japanese equivalent of Wei Fang who was a minor figure in Ancient China.

Anime
In Ikki Tousen: Dragon Destiny, she plans to send the world into chaos by using Sousou and other evil spirits. During the Battle of Red Cliffs, she attempted to run over her enemies in a car but crashed. It was during this she revealed that she could still actually walk, her crippleness was thought to be a deception tactic. She attacked Ryubi but was cut down by Kanu. She merged her powers with Sousou and her physical body crumbled away. It is also a thought that after the Battle of Red Cliffs, her spirit was somehow reborn with the ashes around her into the main antagonist of Xtreme Xecutor, Kentei. This is thought because in an episode, Teni is seen in the Chapel asking for her "Maria-sama" to return. Seconds later, a cloaked figure appears and Teni says, "I knew you would return."